<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <meta http-equiv="X-UA-Compatible" content="ie=edge" />
    <title>浮动注意点</title>
    <style>
      /* 如果一个子元素浮动了，尽量其他盒子也浮动，这样才能保证这些子元素一行显示 */
      .box {
        width: 900px;
        height: 300px;
        background-color: pink;
        margin: 0 auto;
      }

      .damao {
        float: left;
        width: 200px;
        height: 200px;
        background-color: purple;
      }

      .ermao {
        float: left;
        width: 200px;
        height: 150px;
        background-color: red;
      }

      .sanmao {
        float: left;
        width: 300px;
        height: 240px;
        background-color: blue;
      }
    </style>
  </head>

  <body>
    <div class="box">
      <div class="damao">大毛</div>
      <div class="ermao">二毛</div>
      <div class="sanmao">三毛</div>
    </div>
  </body>
</html>
